Found in Indonesia

April 8, 1998
From: Lindsay Warren

Dear Bill
I have attached some jpg files which I hope you can identify. As with the others they were found around Pulau Hoga in the Tukang Besi islands of SE Sulawesi, Indonesia last September when Bernard Picton was also there. Most of the diving was on walls as previously described heavily covered in hard and soft corals, ascidians, coralline algae and small areas of green / brown algae with depths between 3-20m. Unfortunately I do not have the notes of exactly what surface they were each found on.
Many thanks for your help
All the best
Lindsay Warren

Warren, L., 1998 (Apr 8) Found in Indonesia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Both these photos are identifiable with Chromodoris dianae. This species has only recently been named. It is one of a number of white or bluish chromodorids with black longitudinal lines and orange or yellow on the gills, rhinophores and sometimes the mantle edge. I am not sure whether Gosliner & Behrens have the story completely correct as they include animals which fit both your photos. One colour type has yellow-tipped gills (as in the photo above from Cebu) and the other has a yellow line along the outer edge of each gill. In other groups of similarly coloured chromodorids such differences often correlate with anatomical differences...Bill Rudman

Rudman, W.B., 1998 (Apr 8). Comment on Found in Indonesia by Lindsay Warren. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Chromodoris dianae

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